Apparatus for spinning artificial threads from solutions of cellulose ethers or esters



June 9, 1931. u, \MANCINI 1,809,303

APPARATUS FOKSPINNING ARTIFICIAL THREADS FROM summons OF CELLULOSE ETHERS ORAESTERS Filed March 27, 1928 awvam ioz AQ MM Patented June 9, 1931 v UNITED STATES,

PAT NT- OFFICE;

UGO MeNcINI, or MILAN, ITALY, AssIeNoR TO aurarno COMPANY, moonrone'rnn, or NEW YORK, 1\T.:Y.' V

APPARATUS FOR SPINNING ARTIFICIAL THREADS FROM 'so UTIoNs or C LLULOSE I 'EII-IERS on nsmnns Application filed March 27, 1928, Serial so.

' orifices of said nozzle, into a'spinning chamterminal member of the supply pipe.

ober and in the form of liquid jets which solidify and undergo transformation into artificial threads.

In all the known devices described in the technical literature, the rotary portion is restricted to the spinning nozzle properly so called, or, in conjunction therewith, to the U. S. patent application No. 209,018 filed on the 28th July, 1927 in the name of Mr.

' Thenoz, for an apparatus for spinning artificial threads,- describes an improvement in the form and arrangement of the orifices in j a device of this kind.

, spinning nozzle,

In the application of these rotary spinning nozzles, it has been found that, in spinning under very heavy pressures and with collodions of high temperature or highconcentration, it is impossible to obtain a hermetical junction between the rotary portions and the of inconveniences arise, namelylosses of collodion (which produce variation in the size of the thread), and secondly, influx of air by the direct introduction of small bubbles which cause breakage of the thread. These drawbacks also occur in operating under ordinary conditions of temperature and concentration. I

Moreover, the wear resulting, in this type of spinning nozzle, from thefrlction between the fixed and rotary members, and from the relatively complicated nature of the joints at that point, introduces into the collodion metallic or other particles, which, although infinitesimal, are suflicient to contaminate the cellulose solution and'r-apidly clog the filter of the spinning nozzle;

The present invention has for its object to obviate all these inconveniences. It consists in imparting a rotary motion, not only to the butalso to the filters, the

265,161, and in France December 26, 1927.

influence the size of thread. Similarly, any

detritus of metallic (or other) particles resultlng from the wearon the-fixed or rotary members and liable toen-ter-the collodion,

.will be retained by; the filters, beyond which latter there is. no joint inthe channels in which the collodion circulates. Allthis-portion of the'piping rotates with the spinning nozzle and filters.

Adevice embodyingthis principle is illus- I 'trated, by way of example, in the single figure of; the accompanying drawing, but it must be understood .that this embodiment is not restr1ct1ve,and that theinvention can be carried out in variousmodifications.

The collodion is supplied through a pi-pe",

A, which is stationary, and is c0nI t6d,Uby' means ofa stuffing-box joint B, with the rotatably mounted shaft VD provided withpjas sagesE and L disposed as shown. This shaft D which is set in rotary motion by pinion gear 00 carries. the spinning nozzle which consequently shares said rotary. mo-

fixed portions. The result is that two kinds tion. I V

' The solution ofcellulose ether or ester, supv plied through the pipe A, enters the passage opensinto said passage and shares the rotary motion of the shaft, leads the solution tothe v Issuing from this latter, the solution reaches the feed pump 1G, throughwhich it by a tube-H into a second filter On lean ing this filter, it is conveyed, bya tube I, into the axial bore L of the shaft D and reaches E in the shaft D. A lateral tube.X,'which passes, and on issuing therefrom is directed,

the spinning nozzle-M. The filter Epump G, tube -H, filter K. and tubal are all. fixedly mounted upon the shaft D,- andconsequently rotate with the spinning nozzle. The rotation ofthe central hub G- o f the-fe ed-pump is efiiected by the following mechanismz ie; I

The d g p o Z aid pu p engages with apinion N, whichis actuated by ,a pinion P "engaging a pinion Q integral with supply pump and the regulating members N; Thepinionl? is driven ythe gene a transmission mechanism of the spinning frame, through gearing QQ}.

It follows that the pump pinion Z is'actuated, after the manner of a planet wheel, in relation to the pinion N integral with. the shaft D. By varying the speed of the gear QQ in relation to that of the main shaft, the pump delivery. can be adjusted to correspond with the desired size of the thread.

I claim Y 1, Apparatus for spinning artificial threads from solutions of cellulose ethers or esters, comprising a collodion supply pipe, a spinning nozzlerotatably mounted with resect to the supply pipe, and means rotata le with the nozzle for filtering and for regulating the collodion supplied to the nozzle from the pipe, said means being fixed relatively to the nozzle.

2. Apparatus for spinning artificial threads from solutions of cellulose ethers or esters, comprising a collodion supply pipe; and a spinning nozzle, filtering means and feed pump connected together and rotatable as a unitary structure with respect to the supplyplpe 3. Apparatus for spinning, artificialthreads from solutions of cellulose ethers or esters, comprising a collodion supply pipe; and a spinning nozzle, filtering means and feed pump fixed in relation to each other but rotatable as a unitary structure with respect to the supply pipe; and means for actuating the pump during rotation of such unitary structure. a

4. Apparatus for spinning artificial threads from solutions of cellulose ethers or esters, comprising a collodion supply pipe; a spinning nozzle, filtering means and feed pump fixed in relation to each other but rotatable as a unitary structure with respect to the supply pipe; gearing for rotating said esters, comprising a collodion supply pipe, a

rotatable shaft forming an extension of the supply pipe and having separate inlet and outlet passages, a spinning nozzle secured on the outlet end of the shaft, filter means carried by the shaft and connecting the inlet and outlet passages therein, a feed pump also carried by the shaft and communicating with the filter means, and gearing for rotating the shaft.

7. Apparatus for spinning artificial threads from solutions of cellulose ethers or esters, comprising a collodion supply pipe, a rotatable shaft forming an extension of the supply pipe and having separate inlet and outlet passages, a spinning nozzle secured on the outlet end of the shaft, filter means carried by the shaft and connecting the inlet and outlet passages therein, a feed pump also carried by the shaft and communicating with the filter means, gearing for rotating the shaft, and separate gearing for actuating the feed pump.

8. Apparatus for spinning artificial threads from solutions of cellulose ethers or esters, comprising a collodion supply pipe, a spinning nozzle rotatably mounted with respect to the supply pipe, and a feed pump fixed with relation to but rotatable with the nozzle for regulating the supply of collodion thereto.

In testimony whereof I afiix my signature.

UGO MANGINI. 

